| 摘要 |
<p>An irrigation pipe (58) formed from a sheet that is rolled into a tube about a longitudinal axis of the sheet. The pipe has a watertight layer and a fabric layer (30). The fabric layer comprises a first fiber arrangement including first main fibres (34) having a first orientation and a second fiber arrangement including second main fibers (36) having a second orientation. The first and second orientations are transverse relative to each other and to the longitudinal axis when viewed in the sheet before it is rolled.</p> |
